dissepiment (disepiment)

[ a a, Di epiments. the sides of the constituent carpels. Spurious or false di epiments are partitions otherwise formed. (b) In hymenomycetous fungi, same as tram a.-2. In zoöl. and an at.: (a) In general, a septum or partition; that which puts asunder two or more things by coming between them: as, the di epiment of the nostrils. (b) Specifically-(1) One of the imperfect horizontal plates which connect the vertical septa in corals, and divide the loculi between the septa into a series of intercommunicating cells. (2) The internal separation or division between the segments of annelids, as worms. - Tabular di epiment, in the tabular corals, one of several horizontal plates reaching entirely acro the cavity of the theca, one above the other. See millepore. In the Tabulata, horizontal plates, which stretch completely acro the cavity of the theca, are formed one above the other and constitute tabular di epiments . Huxley , Encyc. Brit., I. 130.